What are the common interview questions in Python?

This article mainly introduces "what are the common interview questions in Python". In the daily operation, I believe that many people have doubts about the common interview questions in Python. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what are the common interview questions in Python?" Next, please follow the editor to study!

1. What is Python? What are the advantages of using Python?

Python is a programming language with automatic management of objects, modules, threads, exceptions and memory. The advantages of using Python are: simple, easy to learn, portable, extensible, with a variety of built-in data types, open source and so on.

two。 What is it, PEP8?

PEP8 is a coding specification, a series of coding recommendations on how to make Python code more readable.

3. What is serialization (pickling) and deserialization (unpickling)?

The Pickle module allows us to convert Python objects into information represented by string and save them to a file using the dump function, a process called serialization. The process of reconstructing Python objects using the object information saved in the file is called deserialization.

How to copy an object in 4.Python?

In general, you can use the copy.copy () or copy.deepcopy () function to copy objects. But you can't copy all the objects, only most of them.

What does a negative index in 5.Python mean?

Integers and negative numbers can be used for indexing in Python. For a positive index, 0 is the first, 1 is the second, and so on. For a negative index,-1 is the last,-2 is the penultimate, and so on.

6. How do I convert a number to a string?

Use the built-in function str (). If you want the octal or hexadecimal form, you can use the oct () or hex () function.

What is the difference between 7.xrange and range?

Xrange returns a xrange object, while range returns a list object and uses the same amount of memory as its scope, no matter how large the range.

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